Obstet Gynecol 2015 Mar;125(3):551-558
Department of Obstetrics and Gynecology, Division of Urogynecology and Reconstructive Pelvic Surgery, and the Department of Surgery, Division of Urology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania; the Women's Health Department, Division of Urogynecology, Naval Medical Center, Portsmouth, Virginia; and the Department of Obstetrics, Division of Female Pelvic Medicine & Reconstructive Surgery, Emory University School of Medicine, Atlanta, Georgia.